Thin-place detector for looms.



PATENTED JULY-18, 1905.

J. H. BAGWBLL. lTHIN PLAGE DETECTOR POR LOUMS.

APPLICATION FILED FBBfS. 1905.

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@Er @mme UNITED STATES Patented July 18, 1905.

PATENT OEEICE.

JUNIOUS H. BAGVVELL, OF. VEST DURHAM, NORTH CAROLINA, ASSIGNOR TO DRAPERCOMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

THIN-PLACE DETECTOR Fon Looms.

SPECIFICATION forming part of Letters Patent No. 794,966, datedN-Tuly18, 1905.

Application filed February 3, 1905- 'Scrial No. 243.921-

To @ZZ whom, it may concern.-

Beit known that I, JUNIoUs H. BAGwELL, a citizen of the United States,and a resident of Vest Durham, county of Durham, State of NorthCarolina, have invented an Improvement in Thin-Place Detectors forLooms, of which the following description, in connection with theaccompanying drawings, is a specification, like figures on the drawingsrepresenting like parts.

This invention has for its object the production of simple, novel, anddirect-acting means fordetecting the occurrence of a thin place orstreak in the cloth being woven and to effect automatically and promptlythe stoppage of the loom.

lf the take-up mechanism of a loom operates after failure of thefilling, a thin or bare place, often called a streakj will be made inthe cloth by the continued operation of the weaving instrumentality. Bymy present invention the occurrence of such a thin place or streak inthe cloth causes the prompt stop-` page of the loom, so that there isbut a very short distance for the weaver to turn back the cloth.

The various novel features of my invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims.

Figure 1 is a top or plan view of a portion of a loom with oneembodiment of my preseV ent invention applied thereto. Fig. 2 is atransverse sectional detail of the loom, taken on the line 2 2, Fig. 1,and looking toward the left; and Fig. 3 is a perspective view of thethin-place detector to more clearly show its general construction.

The breast-beam 1, lay 2, connected by usual lay-swords 3, Fig. 2, withthe lay rockershaft 4, the temple 5, and its stand 6, fiXedly secured tothe breast-beam, may be and are all of substantially wellknownconstruction and operate in usual manner.

The shipper 7, of usual construction, eX- tends at its lower end througha cam-slot in the head S of a knock-off arm 9, fast on a rock-shaft 10,Fig. 2, mounted on the lower part of the loom-frame and adapted to beoperated by or through warp-breakage, su stantially as in United StatesPatent No. 673,825, dated May 7, 1901, the rocking of the shaft 10 beingeffected by or through the operation of the warp-stop-motion mechanismin well-known manner. Herein l have attached to the rock-shaft a secondarm 11, on which is fulcrumed a dog 12, adapted at times to be engagedby a bunter 13, Fig. 2, movable with the lay, the bunter being shown asrigidly secured to the lay rocker-shaft 4 and having a notched portion14 to receive the rearwardly-extended free end of the dog.

When the dog is moved into the path of the bunter, the shaft 10 isturned in the direction of arrow 15, Fig. 2, on the forward beat of thelay, and through the arm 9 the shipper is released from the usualliolding-notchin the plate 16.

In the present embodiment of my invention l have mounted the thin-placedetector on one of the temple-stands, the stand being provided withdepending ears 17, Fig. 2, to receive loosely a short transverserock-shaft 18, to which are adj ustably secured the hubs of arms 19 and20. (See Fig. 3.) A link 21 pivotally connects the rear end of arm 19with the dog 12, as clearly shown in Fig. 2, and under normal conditionsthe dog is maintained in the inoperative position therein illustrated.The arm 20 is made longer and is inclined laterally toward the center ofthe loom, Fig.A 1, to clear the temple, and then 1t is bent rearward anddownward at 22, terminating in a downturned thin-place detectingfoot 23to rest upon the cloth adjacent the fell, the extremity of the footbeing flattened, preferably, to form a thin blade 24, as best shown inFig. 3, parallel to the warps and resting on the filling-threads at thefell.

While the filling sustains the detector or foot 23 the dog 12 will beheld out of the path of the bunter 13, but when the filling fails and isnot taken up the cloth will be drawn forward by the take-up mechanism,so that the thin-place detector will be no longer supported and its thinend 24 drops between the warp-threads. The arm 19 moves downsimultaneously, and the dog is thereby moved into the bunter-path, andstoppage of the loom is effected.

By mounting the thin-place detector on the temple-stand it can beadjusted with the latter, while it is conveniently supported inoperative position. The connection between the detector and dog is soflexible that lateral or fore-and-aft adjustment of the templestand maybe made without trouble. Should the lateral adjustment be very extreme,the do(r 12 can be moved along the rock-shaft l0 and held in adjustedposition by the setscrew 11X, the set-screw 13X, Fig. 2, providling forcorresponding adjustment of the Fig. 1, as they would tend merely toconfuse bunter 13.

The bunter and dog have been omitted in the same.

My invention is not restricted to the precise construction andarrangement herein shown and described, as the same may be modified orvaried in different particulars by those skilled in the art Withoutdeparting from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a loom, a temple, its stand, a thinplace detector mounted thereon,a shipper, and releasing means therefor controlled by said detector, torelease the shipper upon the occurrence of a thin place in the cloth.

2. In a loom, a temple, its stand, a thinplace detector pivotallymounted thereon and normally held inoperative by the lling at the fellof the cloth, a shipper, and releasing means therefor including a dogmaintained inoperative normally by the said detector, and a bunter tocooperate with the dog upon absence of the filling at the fell.

3. In a loom, in combination, a temple, its stand, a thinplace detectorpivotally mounted on the stand and normally restin on the cloth at thefell, and means controlle and rendered operative by or through thedetector and adapted to effect the actuation of a stoppinginstrumentality upon the occurrence of a thin place in the cloth.

4. In a loom, in combination, a thin-place detector normally heldinoperative by the nllin at the fell of the cloth, alaterally-adjustable support on which the detector is mounted, ashipper, and means to release the same, controlled by the said detector,said means including a rocking bunter, and a normally inoperative dogflexibly connected with the detector.

In testimony whereof l have signed my name to this specification in thepresence of two subscribing witnesses.

JUNIOUS H. BAGWELL.

Witnesses J. F. PLEAsANTs, JNO. F. HARWARD.

